Footage filmed at a Gwynedd quarry reveals a few surprises underwater.

While people who have dived at Vivian Quarry, at Parc Padarn, Llanberis will be well aware of what greets them in the depths of the site, anyone venturing to the diving centre for the first time will be in for a shock.

Andrew Walters filmed his dive at the quarry, and while he came across a submerged boat, he also came face to face with gnomes, an alien and a submarine.

The crystal clear footage, which was uploaded onto YouTube , shows a few additions to the diving centre’s underwater exhibits include original mining memorabilia, and a blast shelter.